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Reference Design
OPA187, OPA2187, OPA4187
SBOS807D – DECEMBER 2016 – REVISED DECEMBER 2018
OPAx187 0. 001-µV/°C Drift, Low Power, Rail-to-Rail Output 36-V Operational Amplifiers Zero-Drift Series
1 Features
•1 Low Offset Voltage: 10 µV (maximum) • Zero Drift: 0. 001 µV/°C • Low Noise: 15 nV/√Hz • PSRR: 160 dB • CMRR: 140 dB • AOL: 160 dB • Quiescent Current: 100 µA • Wide Supply Voltage: ±2. 25 V to ±18 V • Rail-to-Rail Output Operation • Input Includes Negative Rail • Low Bias Current: 100 pA (typical) • EMI Filtered Inputs • Microsize Packages
2 Applications
• Bridge Amplifier • Strain Gauge • Test and Measurement Equipment • Transducer Application • Temperature Measurement • Electronic Scales • Medical Instrumentation • RTD Amplifier • Precision Active Filters • Low-Side Current Monitoring
3 Description
The OPAx187 series operational amplifiers use autozeroing techniques to simultaneously provide lowoffset voltage (1 µV), and near zero drift over time and temperature. These miniature, high-precision, low-quiescent current amplifiers offer high-input impedance and rail-to-rail output swing within 5 mV of the rails into high-impedance loads. The input common-mode range includes the negative rail. Either single or dual supplies can be used in the range of 4. 5 V to 36 V (±2. 25 V to ±18 V).
The single version of the OPAx187 device is available in microsize 8-pin VSSOP, 5-pin SOT-23, and 8-pin SOIC packages. The dual version is offered in 8-pin VSSOP and 8-pin SOIC packages. The quad version is offered in 14-pin SOIC, 14-pin TSSOP, and 16-pin WQFN packages. All versions are specified for operation from –40°C to +125°C.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOIC (8)
4. 90 mm × 3. 91 mm
OPA187
SOT-23 (5)
2. 90 mm × 1. 60 mm
VSSOP (8)
3. 00 mm × 3. 00 mm
OPA2187
SOIC (8) VSSOP (8)
4. 90 mm × 3. 91 mm 3. 00 mm × 3. 00 mm
SOIC (14)
8. 70 mm × 3. 90 mm
OPA4187
TSS...
OPA2187 PDF File
